<?php
$servername = "localhost";
 $username = "root";
 $password = "12345678";
 $port=3307;
 $dbname = "xk";

 // 创建连接
 $conn = new mysqli($servername, $username, $password, $dbname,$port);
 // 检测连接
 if ($conn->connect_error) {
 die("连接失败: " . $conn->connect_error);
 }
 ?>